Grinding and polishing machine



(No Model.)

I. EOOLES.

GRINDING AND POLISHING MAGHINE.

INVENTOR WITNESSES: WM; Wflm 67126624 W BY ATTORNEYS.

, Unrrnn STATES PATENT @rrrcn.

FISH EGCLES, 0F AUBURN, NEW YORK.

GRINDING AND POLISHING MACHiNE.

SPECIFICATION forming part of Letters Patent No. 269,647, dated December .26, 1862.

(No model.)

To all whom it may concern:

Be it known that I,F1si1 Eoonns, of Auburn, in the county of Cayuga and State of New York, have invented a new and Improved Grinding and Polishing Machine, of which the following is a full, clear, and exact description.

This invention consists essentially of a chuck for holding hollow ware to be ground and polished on theinuer surface, mounted by a pivotal connection upon the carriage by which it moves along the ways on which it works to and from the emery-ball, and so geared with the feeding-screw and a spring that the chuck turns on its pivot suitably to present the irregular surfaces of the vessels to the polishing-ball, while the carriage moves the vessels along the ball, as hereinafter fully described.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a side elevation of myimproved machine for grinding and polishing hollow ware. Fig. 2 is a plan view. Fig. 3 is an end elevation. Fig. 4 is a plan of the carriage. Fig. 5 is a side elevation of the carriage.

The chuck for holding the hollow ware to be polished, so as to present the interior of the ware to the grinding and polishing ball a, may consist of any approved eontrivance of arms, I), and suitable adjuncts, mounted on a mandrel, a, rotating in a head or stock, (I, which I propose to mount by its base eon the plate f of a carriage by a vertical pivot, g, so that the chuck may swing to right and left, besides moving forward and backward with respect to the grinding-head a.

The carriage-plate f is mounted by flanged wheels h on the ways *5 for working to and from the grinding-head a to enable it to work with less friction than it can on slides.

vZ represents the feed-screw, by which the chuck is moved toward and from the grindingball a. It is connected by not m connectingrod n, and lever 0 with the carriagef for moviug it back and forth; and 19 represents a spring for turning the chuck at the same time on the pivot 9, said spring being attached at one end to said pivot, coiled around it one or more times, and connected by its other end with a stud-pin, q,'in the arm 1', attached to carriage f, so that its tension tends to swing the chuck and press the inner surface of the vessel contained in it against the ball a.

It will be seen that, whatever the curvature of the side of the vessel may be, the spring will keep it in contact with the grinder while the vessel is moved along it from bottom to top. To begin with, the carriage is set up to the grinder by hand, after loosening the nut mfrom the feed-screwl by the common method used for that purpose, (not here shown,) so that the latter touches the center of the bottom of the vessel. The machine is then setin motion, the nut is connected with the feedscrew, and the motion continued until they feed-screw has withdrawn the vessel from the grinder, which completes the operation.

The grinder a has no longitudinal motion relative to the ways 2'; but it is rotated at a high speed by a belt from the large pulley s on the main shaft 7. The chuck is slowly ro tated at the same time by a belt from the drum n on shaft t to the pulley w on its mandrel, and the feed-screw l is driven by belt 00 from pulley y onto pulley z of a counter-shaft, z, from a pulley, 2 on which belt a works, ont0. pulley b of the screw.

The arm 0 is diagonal to the line of the ways to allow the head-stock platef to be ac curately adjusted relative to the nut m by setting the'rod n at different angles.

It will be noticed that I am enabled to use wheels h for the carriage to run on in this machine, because of the lateral vibration of the chuck-mandrel, which does not therefore demand the exactly true lineal reciprocation that requires the use of slides, for the lateral vibrations which the wheels are subject to do 0 not interfere with the proper performance of the work.

Having thus fully described my invention, I claim as new and desire to secure byLetters Patent- 1. In a machine for grindinghollow ware, the combination, with the grinding-ball a, longitudinally fixed relative to the ways i, the ware holding chuck I), the spindle c, carrying the chuck, and the horizontally-vibrating plate 0, too

to which spindle 0 is journaled, of the horizou- 0, the chuck b, and the revolving ball a, of the tally-reciprocating plate f, the pivot g, c'ondiagonal arm 0, secured to platef, the adjustto meeting the plates 0 and f, and the spring 12, able connecting-rod n, the serew-nut m, and fixed at one end to the pivot g, the other end the feed-screw I, as shown and described.

5 being supported by a stud, q, in the arm 0", ex- FISH ECQLES.

tending from the platef, as shown and de- Witnesses: scribed. l G. H. SMYTH,

2. The combination, with the plates f and l ADOLPH KEIL. 

